From cf6553b82f05065028f46a7f94bf7465939a2563 Mon Sep 17 00:00:00 2001
From: deptyped <deptyped@gmail.com>
Date: Thu, 10 Aug 2023 14:13:05 +0300
Subject: [PATCH] Add Vercel setup

---
 .gitignore          |  5 ++++-
 .vercelignore       |  1 +
 README.md           | 52 +++++++++++++++++++++++++++++----------------
 api/index.ts        | 22 +++++++++++++++++++
 src/config.ts       |  1 -
 src/server/index.ts | 18 ++++++++++++++++
 tsconfig.json       |  1 +
 vercel.json         | 12 +++++++++++
 8 files changed, 92 insertions(+), 20 deletions(-)
 create mode 100644 .vercelignore
 create mode 100644 api/index.ts
 create mode 100644 vercel.json

diff --git a/.gitignore b/.gitignore
index 9170b038..9506f5e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -135,4 +135,7 @@ data/
 
 # Ignore SQLite database
 *.db
-*.db-journal
\ No newline at end of file
+*.db-journal
+
+# Vercel project configuration
+.vercel
diff --git a/.vercelignore b/.vercelignore
new file mode 100644
index 00000000..e6905a23
--- /dev/null
+++ b/.vercelignore
@@ -0,0 +1 @@
+.env*
\ No newline at end of file
diff --git a/README.md b/README.md
index 06e9df56..2f174040 100644
--- a/README.md
+++ b/README.md
@@ -54,20 +54,46 @@ Follow these steps to set up and run your bot using this template:
     npm run dev
     ```
 
-   **Production Mode:**
+    **Production Mode:**
 
-    Install only production dependencies:
+    Install Vercel CLI:
     ```bash
-    npm install --only=prod
+    npm i -g vercel
     ```
 
-    Set `DEBUG` environment variable to `false` in your `.env` file.
+    Create a project:
+    ```bash
+    vercel link
+    ```
 
-    Start the bot in production mode:
+    Set `NODEJS_HELPERS` environment variable to `0`:
     ```bash
-    npm run start:force # skip type checking and start
-    # or
-    npm start # with type checking (requires development dependencies)
+    vercel env add NODEJS_HELPERS
+    ```
+
+    Set `BOT_MODE` environment variable to `webhook`:
+    ```bash
+    vercel env add BOT_MODE
+    ```
+
+    Set `BOT_TOKEN` environment variable:
+    ```bash
+    vercel env add BOT_TOKEN --sensitive
+    ```
+
+    Set `BOT_WEBHOOK_SECRET` environment variable to a random secret token:
+    ```bash
+    vercel env add BOT_WEBHOOK_SECRET --sensitive
+    ```
+
+    Deploy your bot:
+    ```bash
+    vercel
+    ```
+
+    After successful deployment, set up a webhook to connect your Vercel app with Telegram, modify the below URL to your credentials and visit it from your browser:
+    ```
+    https://APP_NAME.vercel.app/BOT_TOKEN
     ```
 
 ### List of Available Commands
@@ -302,16 +328,6 @@ bun add -d @types/bun
       Enables debug mode. You may use <code>config.isDebug</code> flag to enable debugging functions.
     </td>
   </tr>
-  <tr>
-    <td>BOT_WEBHOOK</td>
-    <td>
-        String
-    </td>
-    <td>
-        <i>Optional in <code>polling</code> mode.</i>
-        Webhook endpoint URL, used to configure webhook.
-    </td>
-  </tr>
   <tr>
     <td>BOT_WEBHOOK_SECRET</td>
     <td>
diff --git a/api/index.ts b/api/index.ts
new file mode 100644
index 00000000..82acd24a
--- /dev/null
+++ b/api/index.ts
@@ -0,0 +1,22 @@
+import process from 'node:process'
+import { handle } from '@hono/node-server/vercel'
+import { createBot } from '#root/bot/index.js'
+import { createConfig } from '#root/config.js'
+import { createServer } from '#root/server/index.js'
+import { createLogger } from '#root/logger.js'
+
+// @ts-expect-error create config from environment variables
+const config = createConfig(convertKeysToCamelCase(process.env))
+const logger = createLogger(config)
+
+const bot = createBot(config.botToken, {
+  config,
+  logger,
+})
+const server = createServer({
+  bot,
+  config,
+  logger,
+})
+
+export default handle(server)
diff --git a/src/config.ts b/src/config.ts
index aee61c40..0c9c051e 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -29,7 +29,6 @@ const configSchema = v.variant('botMode', [
     v.object({
       botMode: v.literal('webhook'),
       ...baseConfigSchema.entries,
-      botWebhook: v.pipe(v.string(), v.url()),
       botWebhookSecret: v.pipe(v.string(), v.minLength(12)),
       serverHost: v.optional(v.string(), '0.0.0.0'),
       serverPort: v.optional(v.pipe(v.string(), v.transform(Number), v.number()), '80'),
diff --git a/src/server/index.ts b/src/server/index.ts
index 715c04ae..37d2c6b9 100644
--- a/src/server/index.ts
+++ b/src/server/index.ts
@@ -57,6 +57,24 @@ export function createServer(dependencies: Dependencies) {
   server.get('/', c => c.json({ status: true }))
 
   if (config.isWebhookMode) {
+    server.get(`/${bot.token}`, async (c) => {
+      const hostname = c.req.header('x-forwarded-host')
+      if (typeof hostname === 'string') {
+        const webhookUrl = new URL('webhook', `https://${hostname}`).href
+        await bot.api.setWebhook(webhookUrl, {
+          allowed_updates: config.botAllowedUpdates,
+          secret_token: config.botWebhookSecret,
+        })
+        return c.json({
+          status: true,
+        })
+      }
+      c.status(500)
+      return c.json({
+        status: false,
+      })
+    })
+
     server.post(
       '/webhook',
       webhookCallback(bot, 'hono', {
diff --git a/tsconfig.json b/tsconfig.json
index a95cd27b..ca9baa47 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,6 +18,7 @@
     "preserveWatchOutput": true
   },
   "include": [
+    "api/**/*",
     "src/**/*"
   ]
 }
diff --git a/vercel.json b/vercel.json
new file mode 100644
index 00000000..f96d4935
--- /dev/null
+++ b/vercel.json
@@ -0,0 +1,12 @@
+{
+    "installCommand": "npm install",
+    "buildCommand": "npm run build",
+    "devCommand": "npm run dev",
+    "outputDirectory": "build",
+    "rewrites": [
+        {
+            "source": "/(.*)",
+            "destination": "/api"
+        }
+    ]
+}
\ No newline at end of file